Vulnerability of memory

Thinking back increases the doubts and points which the person is not sure. However, the truths are limited, so just think about whether at each moment what was like the each scene was increases just the doubtful points. Surely on the way to recall what happened people may notice what happened, but from which further concerns comes up on their mind because after finding a truth, to confirm the truthfulness in their mind people try to look at it from other aspects.